Merge pull request #683 from rithujohn191/add-version-endpoint

api: add gRPC definition for version endpoint.

api/api.pb.go

@@ -21,6 +21,8 @@ It has these top-level messages:
 	UpdatePasswordResp
 	DeletePasswordReq
 	DeletePasswordResp
+	VersionReq
+	VersionResp
 */
 package api
 
@@ -200,6 +202,29 @@ func (m *DeletePasswordResp) String() string            { return proto.CompactTe
 func (*DeletePasswordResp) ProtoMessage()               {}
 func (*DeletePasswordResp) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
 
+// VersionReq is a request to fetch version info.
+type VersionReq struct {
+}
+
+func (m *VersionReq) Reset()                    { *m = VersionReq{} }
+func (m *VersionReq) String() string            { return proto.CompactTextString(m) }
+func (*VersionReq) ProtoMessage()               {}
+func (*VersionReq) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+
+// VersionResp holds the version info of components.
+type VersionResp struct {
+	// Semantic version of the server.
+	Server string `protobuf:"bytes,1,opt,name=server" json:"server,omitempty"`
+	// Numeric version of the API. It increases everytime a new call is added to the API.
+	// Clients should use this info to determine if the server supports specific features.
+	Api int32 `protobuf:"varint,2,opt,name=api" json:"api,omitempty"`
+}
+
+func (m *VersionResp) Reset()                    { *m = VersionResp{} }
+func (m *VersionResp) String() string            { return proto.CompactTextString(m) }
+func (*VersionResp) ProtoMessage()               {}
+func (*VersionResp) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+
 func init() {
 	proto.RegisterType((*Client)(nil), "api.Client")
 	proto.RegisterType((*CreateClientReq)(nil), "api.CreateClientReq")
@@ -213,6 +238,8 @@ func init() {
 	proto.RegisterType((*UpdatePasswordResp)(nil), "api.UpdatePasswordResp")
 	proto.RegisterType((*DeletePasswordReq)(nil), "api.DeletePasswordReq")
 	proto.RegisterType((*DeletePasswordResp)(nil), "api.DeletePasswordResp")
+	proto.RegisterType((*VersionReq)(nil), "api.VersionReq")
+	proto.RegisterType((*VersionResp)(nil), "api.VersionResp")
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -226,16 +253,18 @@ const _ = grpc.SupportPackageIsVersion3
 // Client API for Dex service
 
 type DexClient interface {
-	// CreateClient attempts to create the client.
+	// CreateClient creates a client.
 	CreateClient(ctx context.Context, in *CreateClientReq, opts ...grpc.CallOption) (*CreateClientResp, error)
-	// DeleteClient attempts to delete the provided client.
+	// DeleteClient deletes the provided client.
 	DeleteClient(ctx context.Context, in *DeleteClientReq, opts ...grpc.CallOption) (*DeleteClientResp, error)
-	// CreatePassword attempts to create the password.
+	// CreatePassword creates a password.
 	CreatePassword(ctx context.Context, in *CreatePasswordReq, opts ...grpc.CallOption) (*CreatePasswordResp, error)
-	// UpdatePassword attempts to modify existing password.
+	// UpdatePassword modifies existing password.
 	UpdatePassword(ctx context.Context, in *UpdatePasswordReq, opts ...grpc.CallOption) (*UpdatePasswordResp, error)
-	// DeletePassword attempts to delete the password.
+	// DeletePassword deletes the password.
 	DeletePassword(ctx context.Context, in *DeletePasswordReq, opts ...grpc.CallOption) (*DeletePasswordResp, error)
+	// GetVersion returns version information of the server.
+	GetVersion(ctx context.Context, in *VersionReq, opts ...grpc.CallOption) (*VersionResp, error)
 }
 
 type dexClient struct {
@@ -291,19 +320,30 @@ func (c *dexClient) DeletePassword(ctx context.Context, in *DeletePasswordReq, o
 	return out, nil
 }
 
+func (c *dexClient) GetVersion(ctx context.Context, in *VersionReq, opts ...grpc.CallOption) (*VersionResp, error) {
+	out := new(VersionResp)
+	err := grpc.Invoke(ctx, "/api.Dex/GetVersion", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // Server API for Dex service
 
 type DexServer interface {
-	// CreateClient attempts to create the client.
+	// CreateClient creates a client.
 	CreateClient(context.Context, *CreateClientReq) (*CreateClientResp, error)
-	// DeleteClient attempts to delete the provided client.
+	// DeleteClient deletes the provided client.
 	DeleteClient(context.Context, *DeleteClientReq) (*DeleteClientResp, error)
-	// CreatePassword attempts to create the password.
+	// CreatePassword creates a password.
 	CreatePassword(context.Context, *CreatePasswordReq) (*CreatePasswordResp, error)
-	// UpdatePassword attempts to modify existing password.
+	// UpdatePassword modifies existing password.
 	UpdatePassword(context.Context, *UpdatePasswordReq) (*UpdatePasswordResp, error)
-	// DeletePassword attempts to delete the password.
+	// DeletePassword deletes the password.
 	DeletePassword(context.Context, *DeletePasswordReq) (*DeletePasswordResp, error)
+	// GetVersion returns version information of the server.
+	GetVersion(context.Context, *VersionReq) (*VersionResp, error)
 }
 
 func RegisterDexServer(s *grpc.Server, srv DexServer) {
@@ -400,6 +440,24 @@ func _Dex_DeletePassword_Handler(srv interface{}, ctx context.Context, dec func(
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Dex_GetVersion_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VersionReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DexServer).GetVersion(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/api.Dex/GetVersion",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DexServer).GetVersion(ctx, req.(*VersionReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Dex_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "api.Dex",
 	HandlerType: (*DexServer)(nil),
@@ -424,6 +482,10 @@ var _Dex_serviceDesc = grpc.ServiceDesc{
 			MethodName: "DeletePassword",
 			Handler:    _Dex_DeletePassword_Handler,
 		},
+		{
+			MethodName: "GetVersion",
+			Handler:    _Dex_GetVersion_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: fileDescriptor0,
@@ -432,38 +494,42 @@ var _Dex_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("api/api.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
-	// 527 bytes of a gzipped FileDescriptorProto
+	// 579 bytes of a gzipped FileDescriptorProto
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+	0x05, 0x00, 0x00,
 }

api/api.proto

@@ -80,16 +80,30 @@ message DeletePasswordResp {
   bool not_found = 1;
 }
 
+// VersionReq is a request to fetch version info.
+message VersionReq {}
+
+// VersionResp holds the version info of components.
+message VersionResp {
+  // Semantic version of the server.
+  string server = 1;
+  // Numeric version of the API. It increases everytime a new call is added to the API.
+  // Clients should use this info to determine if the server supports specific features.
+  int32 api = 2;
+}
+
 // Dex represents the dex gRPC service.
 service Dex {
-  // CreateClient attempts to create the client.
+  // CreateClient creates a client.
   rpc CreateClient(CreateClientReq) returns (CreateClientResp) {};
-  // DeleteClient attempts to delete the provided client.
+  // DeleteClient deletes the provided client.
   rpc DeleteClient(DeleteClientReq) returns (DeleteClientResp) {};
-  // CreatePassword attempts to create the password.
+  // CreatePassword creates a password.
   rpc CreatePassword(CreatePasswordReq) returns (CreatePasswordResp) {};
-  // UpdatePassword attempts to modify existing password.
+  // UpdatePassword modifies existing password.
   rpc UpdatePassword(UpdatePasswordReq) returns (UpdatePasswordResp) {};
-  // DeletePassword attempts to delete the password.
+  // DeletePassword deletes the password.
   rpc DeletePassword(DeletePasswordReq) returns (DeletePasswordResp) {};
+  // GetVersion returns version information of the server.
+  rpc GetVersion(VersionReq) returns (VersionResp) {};
 }

server/api.go

@@ -10,8 +10,13 @@ import (
 
 	"github.com/coreos/dex/api"
 	"github.com/coreos/dex/storage"
+	"github.com/coreos/dex/version"
 )
 
+// apiVersion increases everytime a new call is added to the API. Clients should use this info
+// to determine if the server supports specific features.
+const apiVersion = 0
+
 // NewAPI returns a server which implements the gRPC API interface.
 func NewAPI(s storage.Storage) api.DexServer {
 	return dexAPI{s: s}
@@ -159,3 +164,10 @@ func (d dexAPI) DeletePassword(ctx context.Context, req *api.DeletePasswordReq)
 	return &api.DeletePasswordResp{}, nil
 
 }
+
+func (d dexAPI) GetVersion(ctx context.Context, req *api.VersionReq) (*api.VersionResp, error) {
+	return &api.VersionResp{
+		Server: version.Version,
+		Api:    apiVersion,
+	}, nil
+}